Iron C diagram Flashcards
1
Q
Delta phases
A
L + D top half(1539) melting point . Lower boundrry of triangle D + Y bottom half( 1493) upper boundray of triangle.
2
Q
Euctelictic point
A
L change to Y + Fe3C. forms
3
Q
Eucteloid point
A
y change to a + Fe3C. Forms Pearlite
4
Q
Alpha phases
A
a + y
5
Q
Perteticetict point
A
Gamma < Delta + L.
6
Q
Bainite
A
results from quenching at an intermediate speed. similar structure to pealrite.
7
Q
what is the purest form of iron
A
Ferrite
8
Q
Austnetie
A
Exists at high tempeture( 728 to 1490) so non magnetic. low strength.
9
Q
Martnesite
A
. Very hard, but very brittle. Hardest of the phase ferrous metals
